Catalysis of hydrogen evolution on Pt(111) by absorbed hydrogen
- 8 November 2021
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 155 (18), 181101
- https://doi.org/10.1063/5.0072069
Abstract
The activity of Pt(111) electrodes for the hydrogen evolution reaction (HER) in 0.5M H2SO4 solution is found to increase with continuous potential cycling in the HER potential region. In addition, the basic cyclic voltammograms obtained in 0.5M H2SO4 saturated with N2 after HER show several characteristic changes: the current waves for hydrogen adsorption in the region of0.2 < E < 0.35 V and for sulfate adsorption at 0.35 < E < 0.5 V decrease and the current spike at 0.44 V for the phase transition of the sulfate adlayer gradually disappears. We suggest that these changes are caused by the absorption of a small amount of hydrogen in the subsurface layer and propose a mechanism by which this enhances hydrogen evolution.Funding Information
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China (21972131, 21872132, 21832004)
This publication has 26 references indexed in Scilit:
- Hydrogen Electrocatalysis on Single Crystals and on Nanostructured ElectrodesChemphyschem, 2011
- Cyclic Voltammograms for H on Pt(111) and Pt(100) from First PrinciplesPhysical Review Letters, 2007
- Adsorbate interactions and phase transitions at the stepped platinum/electrolyte interface: experiment compared with Monte Carlo simulationsSurface Science, 2001
- Silica-modified electrode for the selective detection of mercuryJournal of Solid State Electrochemistry, 2000
- Comparative evaluation of surface structure specificity of kinetics of UPD and OPD of H at single-crystal Pt electrodesElectrochimica Acta, 1998
- Temperature-Dependent Hydrogen Electrochemistry on Platinum Low-Index Single-Crystal Surfaces in Acid SolutionsThe Journal of Physical Chemistry B, 1997
- Hydrogen evolution on platinum single crystal surfaces: effects of irreversibly adsorbed bismuth and antimony on hydrogen adsorption and evolution on platinum (100)The Journal of Physical Chemistry, 1993
- Mass transfer effect in hydrogen evolution reaction on Pt single-crystal electrodes in acid solutionJournal of Electroanalytical Chemistry, 1992
- The influence on selectivity of the environment of catalyst sites: III. The role of hydrogen occlusion in group VIII metalsJournal of Catalysis, 1978
- The Permeation of Electrolytic Hydrogen through PlatinumJournal of the Electrochemical Society, 1966